Hi ,Guys i try to install Lm on my hdd alongside with Windows 8 , but the problem i can't find my partitions in partition part in installer . only Lm detect an usb 16gb in fat32 . how i can install Lm ?

and post the results here.Also, run the GParted application and post a screenshot of what it shows if you can. If you see any red circles with a ! inside or other warnings, click on them to reveal information.

The Ubiquity installer is not very bright and will show a blank disk sometimes. Like when the partition table isn't quite right or there are dmraid headers on the disk.

Is this s new disk or an old one...have you ever used this disk in a Wndows RAID system?

And ALWAYS back up your Windows data before attempting to install Mint on the same disk. There is a small chance you may lose it.

You need to select one to be removed, remove it, and then rezsize / move the partitions to create one big enough empty, non-allocated partition.

Then you need to create extended partition on that unallocated one, and create as many logical parttition you may need ( root, swap,home ?)

All the above you need to do in ie. gparted.

One to be removed might be ie. Windows Recovery partition. Your system should have a tool to create some 3 DVDs out of that Recovery Partition for possible later use. Other possibility might be to move the partition as a whole to ie. USB drive.

There are quite a many threads concerning similar situations in the net, Key words are ie. "4 primary", "HP_tools" (if you happen to have HP), "extracting Recover" etc etc.

Hopefully somebody who really can help and explain happens to see this thread ... ,and write a proper tutorial !

Edit: the reason you cannot do anything with gparted might be that your HDD is mounted ? Use the same gparted to unmount ( when in live DVD)

The fact that you're seeing no partitions in the installer suggests either a partition table error or leftover RAID data. I don't see any obvious problems in your fdisk output, so chances are it's RAID data. There are pages on the Web that describe how to remove this old data, but I don't happen to have any of them bookmarked, so I suggest you try a Web search on keywords like "Linux remove raid data."

Linux can see all your partitions so it is an installer problem.First, back up any Windows data that is vital. There is always a small chance of damaging something when installing lnux on the same disk as Windows.Let's eliminate the possibility of Windows RAID artifacts first. Open a terminal and type:

As has been said, you have all 4 primary partition slots used up already. You either need to use a different HD for linux or free up 1 partition and convert it to an "extended" primary partition that can then be subdivided into as many "logical" partitions as you like.

Main Windows PartitionIf you are happy with the windows setup use a backup program, if not use the recovery program to reinstall a fresh windows setup NB this will be destructive, once complete and setup; use - http://www.macrium.com/reflectfree.aspx